baber/WOPTO huggingface dataset:
Patent GB-950621-A (GB)
Title: Improvements in or relating to marking equipment
Inventor: THROP ARNOLD
IPC: B44B5/00
Filed: 1960-09-22
Abstract: 950,621. Embossing. EDWARD PRYOR & SON Ltd. Sept. 18, 1961 [Sept. 22, 1960], No. 32531/60. Heading B3Q. A marking device comprises a holder 1 for dies 2 used for impressing material to be marked, a mounting 4 for the holder 1, a cylinder 5, housing a piston 6 for impelling the mounting 4, and a partition 8 in the cylinder dividing the cylinder from a reservoir 9, an aperture 10 in the partition being sealed by the piston 6, and high and low pressure air connections being made to the reservoir and cylinder respectively. In operation, the device is pressed against the material to be marked, the selfaligning holder 1 contacting the workpiece and causing a pin 19 to slide inwardly to shift a spool 20. This ducts low pressure air to poppet valves 12 to vent the cylinder 5 to atmosphere, so that the low pressure air in the cylinder which previously urged the piston to the right to just overcome the force due to high pressure air in the reservoir 9, now allows the piston to be moved to the left. The seal 31 between the piston and the partition is thus broken, and the high pressure air, now acting on the full area of the piston, impels the piston rapidly to the left. The piston strikes the mounting 4 and the dies 2 are forced into the workpiece. The spool 20 meanwhile moves to the left to allow law pressure air to refill the cylinder 5. Air is also supplied through a pipe 51A to shift a valve 54 so that high pressure air is supplied to the reservoir 9. The die holder may be rigidly attached to the piston and the triggering may be effected manually. The low pressure air is conveniently supplied from a high pressure pipe via a regulator 63. The device may be supported horizontally on parallel links, as shown in Fig. 8, or may be mounted vertically on rails.
Patent GB-1015067-A (GB)
Title: Production of solid potassium metabisulfite
Inventor: SPORMANN WALTER
IPC: C01D5/14
Filed: 1964-08-11
Abstract: Potassium metabisulphite is prepared by reacting SO2 with KOH and/or K2CO3.  The reactants, i.e. SO2 (or SO2 containing gas) and aqueous K2CO3 of 15% by weight minimum concentration are introduced into an aqueous solution, substantially saturated with K2SO3 and KHSO3 at the reaction temperature and which may already contain solid K2S2O5, at a pH <7.5.  The deposited K2S2O5 is separated, e.g. by filtration or centrifuging.  The process may be carried out at 50-80 DEG  C. and the reaction mixture cooled prior to K2S2O5 separation. The reactants may be stirred and the process carried out in a batchwise or continuous manner.
Patent GB-176070-A (GB)
Title: Improvements in or relating to hat or like covering and protecting devices
IPC: A42B1/04
Filed: 1920-11-19
Abstract: 176,070. Gee, H. C. Nov. 19, 1920. Covers and protectors; hoods.-A head or hat covering comprises a bag-like portion A having a strand of elastic threaded around its bottom edge and adapted to tie in front, a skirt or flap E extending approximately three-quarters around this bottom edge and provided with an elastic constricting- medium around its bottom edge, and a collar portion G adapted to overlap and fasten over at the front. Reference has been directed by the Comptroller to Specification 7049/03.
Patent GB-1469557-A (GB)
Title: Numerical control system for press brakes and the like
IPC: B21D5/00
Filed: 1974-07-24
Abstract: 1469557 Gauging Stops AUTOMEC Inc 24 July 1974 32755/74 Heading B3E [Also in Division G3] In a numerically controlled back gauge 10, e.g. for a press brake, having at least one stop mounted on a carriage 36 which is movable relative to a frame 22 by means of a leadscrew 38 and a reversible servomotor 40, and numerical control means for causing the motor to drive the carriage to successive positions, the stop is in the form of a finger 56 or 58 which normally extends horizontally but is free to pivot upwardly about a pin 92 to prevent damage during bending of the workpiece 12. As described the end of each stop finger is rounded, and stepped for alternative stop positions; the fingers are mounted on bars 86 fixed to cross members 52, 54 which can be adjusted in height by hand wheels 76, 78. The carriage has ball-bearing bushes 37 running on cylindrical guides 32, 34. To overcome backlash, the system is arranged to over-drive the screw 38 by a quarter turn, and then to drive back to the prescribed position. The control system (see Division G3) can store a programme of up to six positions of the carriage.
Patent GB-391891-A (GB)
Title: Improvements in steam and like fluid pressure reducing valves
IPC: G05D16/06
Filed: 1931-11-26
Abstract: 391,891. Pressure-reducing valves. ROYLES, Ltd., and ROYLE, A. G., Dalham Engineering Works, Irlam, Lancashire. Nov. 26, 1931, No. 32758. [Class 135.] In a pressure-reducing valve of the kind described in Specification 19132/02, [Class 135, Valves &c.], having a rubber tube the axial elasticity of which resists the fluid pressure tending to close the valve, the rubber tube is replaced by a corrugated thin metal tube g, the corrugations being deep and closely pitched to provide a maximum expansion in a given length of tube. The tube g is secured by brazing or other means to a nut h screwed into the valve body and to a cap carried by the valve spindle e<1>. The cap j carries a protective sleeve k which slides in an extension of the nut h. The pressure fluid passes between the spindle el and its guide f to the interior of the tube g. A relief valve o is mounted in a plug n screwed into the valve body. The relief valve is provided with adjustable loading means comprising two levers pivoted to the opposite ends of a rod rigid with the valve body, the middle parts of the levers contacting respectively the valve o and the cap j and their ends remote from the pivots being connected by a spring-adjustable by means of a screw carried in the end of the lower lever. Reference has been directed by the Comptroller to Specifications 15637/86, 10752/94, and 195,136, [all in Class 135, Valves &c.].
Patent GB-264011-A (GB)
Title: Improvements in or relating to rotary strainers for liquids
IPC: B01D35/16
Filed: 1925-12-29
Abstract: 264,011. Ashley, W. E., Tart, H., and Barker, D. Dec. 29, 1925. Rotary strainers.-A vertical strainer b, Fig. 1, is rotated by a worm d within a casing a having an inlet e and an outlet f for the strained liquid. Solid matter arrested by the strainer falls to the lower part a' of the casing and is discharged through a pocketed drum or paddle wheel g, Fig. 2, to a sump. Water supplied through a passage a<2> and jets k washes sediment from the strainer into a hood j and thence through a passage a<3> to the sump. The upper parts of the sides of the hood act as scrapers. The wheel g may be replaced by a vertical worm which pushes the solid matter through a balanced non-return valve. With the arrangement shown in Fig. 5 the hood j is mounted on a shaft o which can be turned by a hand wheel p or by power to collect solid matter from the flat bottom of the casing and push it through an opening a<4>.
Patent GB-268264-A (GB)
Title: Improvements relating to comminuting mills
IPC: B02C23/00
Filed: 1926-12-29
Abstract: 268,264. Allis-Chalmers Manufacturing Co., (Assignees of Newhouse, R. C.). April 15, 1926, [Convention date]. Ball and like mills.-A rotary comminuting mill comprises a cylindrical shell portion forming a preliminary reduction chamber, a cylindrical shell portion of smaller diameter forming a final reduction chamber, a tapered shell portion connecting the cylindrical shell portions, and freely-tumbling comminuting-bodies within each shell portion. As shown, Figs. 1, 2, and 3, the drum is divided into coarse and fine grinding chambers 3, 4 by means of a transverse partition, and supported on feed and discharge trunnions 23, 24. The chamber 3 consists of a cylindrical shell portion 17 of relatively large diameter and a tapered shell portion 18. The material reduced by the balls &c. 20 in the chamber 3 passes through screens 26 in the partition into a discharge space 27 in the partition and through a screen 7 surrounding the drum into a receptacle 19. Spreaders 29 distribute the material over the screen 7, and the space 27 is provided with return passages 25 to which rejects from the screen 7 are delivered by means of scoops 32. Peripheral scoops 8 and injectors 29 deliver the material from the receptacles 19 into the fine-grinding chamber 4, which consists of a long cylindrical shell portion 2 of smaller diameter than the portion 17 and contains small comminuting-bodies 21. The discharge trunnion 24 communicates with a chamber 6 from which fine material and air are withdrawn by a fan 33 through a conduit 10 leading to a dustcollector 12, while coarser particles are removed by a bucket elevator 11 and delivered to a centrifugal separator 15. The oversize material discharged by the separator passes by a conduit 16 to the receptacle 19 for further reduction, and the fine material is delivered to the delivery conveyer 13, which also receives the material separated in the collector 12. The tapered portion 18 of the drum may be arranged on the finegrinding chamber side of the dividing partition.
Patent GB-1362185-A (GB)
Title: Dynamic balancing machines
IPC: G01M1/22
Filed: 1970-07-07
Abstract: 1362185 Converting AVERY-DENISON Ltd 6 Oct 1971 [7 July 1970] 32856/70 Heading H2F [Also in Divisions G1 and G4] The rotary unbalance of a workpiece is measured by transducers at the bearings, whose A.C. signals are combined with reference sine and cosine voltages to give D.C. voltages proportional to U cos # and U sin #, where U is the magnitude of the unbalance and # is the angle between the unbalance radius and the reference radius. The reference voltages are developed from synchronous pulses produced photoelectrically. Each pulse period is divided into twelve equal parts and the nearest linear equivalent to the appropriate part of the sine wave is developed for each part. As shown (Fig. 1), each period of the INPUT pulse train is divided into twelve equal parts by a digital frequency multiplying circuit, the output consisting of twelve successive digits from counter E. The digits are fed through gating circuits to produce at terminals 1, 2 a sequence of binary signals, shown in waveforms 1, 2 of Fig. 3, which form the inputs to an analogue generator (Fig. 2) comprising an amplifier L, inverter M and integrator N. The direct and inverted signals are gated by FET's to produce waveform 5 of Fig. 3, which is integrated at N to give the synthesized sine waveform 6 of Fig. 3. FET T3 ensures that the sine wave signal has zero value at 0 and 180 degrees. A similar arrangement produces a synthesized cosine waveform.  The reference sine and cosine voltages are multiplied by the unbalance signal using pulse width modulation and pulse amplitude modulation (Fig. 5a). A 10 kHz triangular voltage signal, waveform 1 of Fig. 6, and the sine wave reference voltage V R , 2 of Fig. 6, are applied to a comparator, whose output is a PWM signal, 4 of Fig. 6, representing the intervals when the triangular voltage exceeds the sinusoidal voltage. The PWM signal is fed to a pulse amplitude modulator, together with the unbalance signal and its inverse. The output is a pulse train with width and amplitude modulation whose average value is proportional to U cos #.
Patent GB-802580-A (GB)
Title: Improvements in spring seating
IPC: A47C27/06
Filed: 1955-11-17
Abstract: 802,580. Spring upholstery. INTALOK, Ltd, and PARKER, S. F. Feb. 18, 1957 [Nov. 17, 1955], No. 32918/55. Class 52(4) A spring unit for a seat, comprises an upper frame 1, 2 supported by a ring of helical coil springs 6 from a lower frame 7, 8, the centre of the unit being free of coil springs and the open cental part of the upper frame being spanned by webbing 4 or spring steel straps or the like. Preferably the spring steel straps take the form of zig-zag wire springs and the turns of adjacent coils of the helical springs are interlinked. The ring of helical springs may comprise one or more rows of springs.
Patent GB-300031-A (GB)
Title: Improvements in driving mechanisms for ink roller carriages of platen printing presses
IPC: B41F1/52
Filed: 1927-12-06
Abstract: 300,031. Spiess, G. Dec. 6, 1927. Inking-apparatus. - Mechanism for reciprocating the ink-roller carriage of a platen printing-press comprises a fixed gear wheel 6, a planet wheel 7 carried by a rotating gear 5 and meshing with the wheel 6, and a link 10 connected to an eccentric pin 9 on the wheel 7 and to a crank 11 on a rock shaft 12 carrying an arm 13 which is connected to the roller carriage. The pin 9 moves in the path shown by the broken line e and the carriage is thus started and stopped gradually without shock.
Patent GB-827287-A (GB)
Title: Improvements in stockings, socks and like articles of knitted footwear and in methods of and apparatus for the manufacture thereof
IPC: D04B1/26
Filed: 1955-11-18
Abstract: 827,287. Knitting. SOC. D' ETUDES ET DE PARTICIPATIONS POUR L'INDUSTRIE ET LE COMMERCE DE LA BONNETERIE. Nov. 18, 1955 [May 21, 1955], No. 33099/55. Class 74 (2). Lower cylinder needles which have drawn loops of main yarn under main stitch cam 13 pass over a fixed tucking cam 3 and so do not clear these loops, but hold them with loops of secondary yarn drawn under secondary stitch cam 4, to be cleared with them as the needles pass over clearing cam 9 and cast off with them to form tuck stitches under cam 13. The upper cylinder needles clear and knit at both feeds and half-cardigan rib is thus produced. A movable bolt cam 17 enables lower cylinder needles to clear and knit at both feeds when required. A fixed tucking cam 19 and movable bolt cam 21 enable upper cylinder needles to be operated in the same way. In addition, the provision of fixed cams 24, 26 and a movable bolt cam 25 enable half-cardigan rib to be produced by casting off at the secondary feed. Socks may be produced having legs wholly or partly in half-cardigan rib with a synthetic material e appearing at the outer surface and a natural material d appearing at the inner surface. Wales incorporating linkslinks loops passing near the heel corners, Fig. 3, may be incorporated to combat slipping of the sock on the wearer's leg. The sole only may be in half-cardigan rib and the leg and instep in 1 x 1 rib.
Patent GB-409805-A (GB)
Title: Improved method and means for testing wires, wire ropes and rods by cyclic bending
IPC: G01N3/00
Filed: 1932-11-23
Abstract: 409,805. Testing physical qualities of materials. HAIGH, B. P., 44, Caterham Road, Lewisham, and ROBERTSON, T. S., 15, St. Germans Place, Blackheath, both in London. Nov. 23, 1932, No. 33113. [Class 106 (ii).] Pieces of wire, wire ropes, &c. are tested by causing them, while flexed under the action of forces acting in opposite directions along one and the same straight line situated nearer to the ends than to some other part of the bent piece, to rotate about the curved axis of their flexure. In one form, Fig. 3, the end 2 of the piece is rounded or fitted with a shoe and is arranged to rotate in a cupped jewel bearing that can be adjusted in the direction 1, 2. The other end 1 also fitted with a shoe is driven by the shaft 6 of a motor 7 being held in a conical recess in the end of the shaft. The shaft 6 is mounted in a bracket 9 which is rotatable about an axis at or near the end of the test piece and perpendicular to the plane containing the curved piece which is stationary during the test. The frame 11 also carries a guide 12 which engages the test piece. The " Endurance " is measured by the number of revolutions of the piece before it breaks registered on a counter 8. When the test piece breaks a spring pushes forward the bearing for the end 2 and actuates a switch to stop the motor. In a modification of this form a different construction of grip is used and the arrangement of swivelling bracket is different. In a further form the specimen is bent into a loop the ends being crossed and gripped in chucks attached to shafts that revolve about axes in parallel planes close to each other, the angle between the shafts being 82‹. The shafts are geared together to turn through equal angles.
Patent GB-348160-A (GB)
Title: Improvements in and relating to the production and use of benzanthrone derivatives
IPC: C09B3/24
Filed: 1929-10-31
Abstract: Benzanthrone derivatives.-The dyes obtained by treating benzanthrone or dibenzanthronyls or their substitution products with hydroxylamine or substances yielding hydroxylamine (such as potassium hydroxylamine mono- and di-sulphonates), followed by alkali fusion, are treated with alkylating or aralkylating agents; the products are usually faster than the original dyes.  In examples (1) the product obtained from benzanthrone by sulphonation, treatment with hydroxylamine or potassium hydroxylamine disulphonate, and caustic potash fusion, is reduced with sodium bisulphite in sulphuric acid and methylated with dimethylsulphate in nitrobenzene; the product dyes cotton in bluish-grey shades, (2) the products of examples 1, 2, and 3 of Specification 348,159, are treated with dimethylsulphate to yield products dyeing in blue to grey shades, (3) the parent material used in example 1 is benzylated by means of benzyl chloride; the product dyes in grey-blue shades, (4) the product obtained by sulphonating chlorinated Bzl : Bzl1-bibenzanthronyl (containing 16,7 per cent chlorine), treating with hydroxylamine hydrochloride and alkali fusion is methylated with dimethylsulphate; the product dyes in blue-grey shades, (5) the product obtained by treating chlorinated 2 : 21-dibenzanthronyl (containing 16 per cent chlorine) with potassium hydroxylamine disulphonate and alkali fusion is methylated with dimethylsulphate; the product dyes in blue-grey shades, and (6) the product obtained by sulphonating Bzl-chlorbenzanthrone, treating with hydroxylamine hydrochloride and alkali fusion is methylated with dimethylsulphate; the product dyes in violet shades.
Patent GB-1392056-A (GB)
Title: Variable magnification lens system
IPC: G02B15/177
Filed: 1972-07-14
Abstract: 1392056 Variable magnification lens CANON KK 14 July 1972 [19 July 1971] 33170/72 Heading G2J A two point focus variable magnification lens system comprises three lens groups the intermediate one of which is adjustable to vary the focal length from a minimum to a maximum value, the system being focused on an object at a predetermined position at the minimum focal length setting and on an object at a second predetermined position at the maximum focal length setting without further focusing, the system satisfying the following relationships:- where f 1  is the focal length of the first lens group, f 2  of the second group, s 1  is the distance to the predetermined position from the front of the lens system when focused at minimum focal length, s 2  the distance to the other predetermined position from the front end of the lens system at maximum focal length º the displacement of the second lens group, K = 1/#Z where Z is the variation in magnification, In is the interval between the principal points of the first and second lens groups in the case of maximum focal length, x is the distance from the front principal point of the first lens group to the position of the image-formed by an object at the predetermined position with the minimum focal length setting, and y is The first lens group may be constructed to move for focusing by a single fine adjustment. Optical data are given in two Examples.
Patent GB-1356289-A (GB)
Title: Process for reducing the total sulphur content of claus off-gases
IPC: B01D53/52
Filed: 1971-07-15
Abstract: 1356289 Desulphurizing Claus off-gases SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 15 July 1971 [17 July 1970] 33217/71 Heading C1A Off-gases containing sulphur dioxide from a Claus kiln are passed at a temperature above 175‹ C. together with a gas containing free hydrogen and/or free carbon monoxide over a sulphided Group VI and/or Group VIII metal catalyst supported on an inorganic oxide carrier, the reduced gases being then passed through a liquid and regeneratable absorbent for hydrogen sulphide and the unabsorbed portion, optionally after incineration, is discharged to the atmosphere, the hydrogen sulphide enriched absorbent being regenerated for re-use and the hydrogen sulphide rich gas mixture liberated being passed to a Claus process. Group VI metals specified are molybdenum, tungsten and chromium; Group VIII metals specified are iron, cobalt and nickel. The inorganic oxide carrier may be alumina, silica, magnesia, boron oxide, thoria, zirconia or a mixture of these compounds. The sulphiding may be carried out by use of the Claus off-gases themselves, the preferred temperature being between 300 and 400‹ C. The reducing gas preferably contains at least 20% by volume of free hydrogen or an equivalent amount of hydrogen/carbon monoxide mixture. Should any carbonyl sulphide be formed when carbon monoxide is used as the reducing gas it may be decomposed in known manner by passage over a heated bed of alumina. Amines and substituted amines in aqueous solution are the preferred absorbents, in particular alkali metal salts of dialkyl substituted amino acids (e.g. potassium dimethylamino-acetate) and polyalkanolamines such as di- or tri-ethanolamine and diisopropanolamine. After absorption, the H 2 S enriched absorbent is regenerated by heating and/or stripping, the H 2 S enriched gas mixture being recycled to the Claus plant and the regenerated absorbent re-used. Using high gas velocities at temperatures lower than 40‹ C. the selectivity of the H 2 S/CO 2  ratio is enhanced, CO 2  being usually present in the off-gases when the Claus process is operated using air. Other gases present which may be reduced to hydrogen sulphide by the present process include carbonyl sulphide and carbon disulphide.
Patent GB-1219999-A (GB)
Title: Improvements in or relating to bucket elevators
IPC: B65G39/00
Filed: 1969-07-02
Abstract: 1,219,999. Endless chain bucket conveyers. MASCHINENFABRIK AUGSBURG-NURNBERG A.G. 2 July, 1969 [5 July, 1968], No. 33336/69. Heading B8A. A bucket elevator having a deflection tumbler comprising two deflection drums 9, 10, around which an endless traction member 14a, 14b, carrying buckets 16 is adapted to move, wherein uniformly-spaced projections 15 extend laterally from the traction member and the deflection drums have correspondingly uniformly-spaced peripheral depressions 12 engageable by the projections, and means 18 are provided for holding the projections in engagement with the depressions as the buckets, performing a scooping action, pass around the deflection tumbler. The means 18 consist of flanges of side frame members 17, 17.
Patent GB-802770-A (GB)
Title: Improvements in and relating to welts for shoes and the like
IPC: A43B9/06
Filed: 1956-11-01
Abstract: 802,770. Boots &c. HALLIWELL, E. F. Nov. 1, 1956, No. 33432/56. Class 17(2) In making slip lasted footwear, after the usual attachment of an upper 14 to a sock 15 by stitching 16, a welt is attached by stitching 17 for subsequent stitching at 22 to a midsole 19 and an outsole 21. The welt strip of plastic, leather or other similar material is generally rectangular in shape and is slit at 9 through at least twothirds of the width of the welt for the stitches 17. A ridge 11 extending beyond the lease of the slit 9 may be provided to act as a guide for the stitching 22, and the upper part 8 of the welt may be initially spaced from the lower part 7 at the slit edge to facilitate the stitching 17.